package written.test;

import java.util.Scanner;
import java.util.concurrent.atomic.LongAdder;

/**
 * @Author: Dang Qi
 * @Date: 2021/4/4  11:10
 * @Description:
 */
public class MeiQ4 {
    public static void main(String[] args) {
        LongAdder longAdder = new LongAdder();
        longAdder.increment();
        longAdder.longValue();

    }
    static boolean[][] visit = null;
    static int[][] arr = null;
    static int k;
    static int res;
    public static int dfs(int i, int j, int next){


        return -1;
    }
}
